WOULD LIKE TO KNOW WHAT KIND OF PERFORMANCE I WOULD EXPECT FROM A ANDREWS CAM 37G,FUELING PUMP, LIFTERS . DELKRON PLATE,RIGHT NOW I HAVE A TW26 CHAIN DRIVE SET UP.I HAVE HIGH FLOW AIR FILTER AND TRUE DUELLS RIENHALTS.NO HEAD WORK YET.I HAVE 2006 STREET GLIDE TWIN CAM 88. THANKS DONAD  

Can't speak to the bagger part of your combo; however I've achieved upwards of 42-43 mpg on my 95" Softail using both my own personal built and hotrodded CV40 and more recently Bob Wood performance 415 carb. I'm also running a HD SE Pro Pipe.  The only suggestion I could make, (to make the 37 work better in your heavier bike), would be to advance it 2 degs. to pull the power band down about 200 rpm, especially if you're riding 2 up a lot. Otherwise, this 37G pulls like a freight train and coupled with proper compression and headwork can easily put you on the edge of the 100/100 club. My .02 FWIW...